CHRYSLER 306-251 Chry Left Cylinder Head Lh 3.6L

( Material: Aluminum ), ( Vintage Part: No ), ( Interchange: 306-251 ), ( Type: Cylinder Head ), ( Manufacturer Warranty: 1 Month ), ( Id: 284b635a-9bb7-4035-905f-f87351f42336 ), ( Country Of Origin: United States )

Review CHRYSLER Chry Left Cylinder Head 3.6l Lh fits AVENGER DURANGO WRANGLER JOURNEY 200 300 2011–2013

The **Chrysler 306-251 11-13 LH (200, 300, Avenger, Durango, Wrangler, Journey) 3.6L Left Cylinder Head** is a meticulously engineered, high-performance component designed to deliver exceptional reliability, power, and longevity to Chrysler s iconic 3.6L Pentastar V6 engine family. This cylinder head is a direct replacement for the original equipment manufacturer (OEM) part, crafted from premium cast aluminum alloy to ensure optimal heat dissipation and structural integrity, even under the most demanding driving conditions. The design incorporates a **four-valve-per-cylinder architecture**, featuring **intake and exhaust valves** with precision-machined seats and advanced valve guides for seamless operation and reduced wear over time. The **left cylinder head** is specifically tailored to fit the left bank of the V6 engine, ensuring proper alignment with the camshaft, rocker arms, and valve springs, which are critical for maintaining optimal engine performance and efficiency.

What sets this cylinder head apart is its **high-quality construction**, including **hardened valve seats** to resist wear from high-octane fuels and aggressive driving styles, as well as **sealed combustion chambers** that enhance compression ratios for improved torque and fuel economy. The **intake ports** are generously sized to maximize airflow, while the **exhaust ports** are optimized for efficient scavenging, contributing to a smoother, more responsive throttle response. This cylinder head is also compatible with **modern emissions standards**, featuring **OEM-style exhaust manifolds** and **proper gasket surfaces** to prevent leaks and ensure compliance with environmental regulations. Whether installed in a **Chrysler 200, 300, Avenger, Durango, Wrangler, or Journey**, this component is engineered to restore or maintain the factory-intended performance, durability, and fuel efficiency of the 3.6L Pentastar engine.

For enthusiasts and mechanics alike, this cylinder head represents a **direct upgrade or replacement solution**, offering the same level of precision and quality as the original while often incorporating **modern manufacturing techniques** to reduce the risk of common failures such as warping, cracking, or valve seat recession. It is designed to work seamlessly with **OEM or aftermarket camshafts, rocker arms, and valve springs**, making it a versatile choice for both stock restorations and performance modifications. Whether you're rebuilding an engine for a daily driver, a towing application, or a high-performance build, this **left cylinder head** ensures that your Chrysler s 3.6L V6 operates with the reliability and power it was originally intended to deliver.

### **Pros and Cons of Buying a 2011 2013 Chrysler 300 (3.6L LH Engine) or Related Models (Chrysler 200, 300C, Avenger, Durango, Wrangler, Journey)**

The **3.6L Pentastar V6 (LH engine)** found in Chrysler s 2011 2013 lineup (including the **300, 200, 300C, Avenger, Durango, Wrangler, and Journey**) is a decent powerplant when maintained properly, but it comes with trade-offs. Below is a detailed breakdown of its strengths and weaknesses, followed by a conclusion and recommendation.

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### **Pros of the 3.6L LH Pentastar Engine & Related Vehicles**

1. **Reliable for the Era**

- The **3.6L Pentastar** was Chrysler s first aluminum V6 with direct injection and variable valve timing, and it proved to be **more durable than the aging 3.3L/3.8L V6 engines** it replaced.

- Many examples **last 200,000 miles** with proper maintenance, especially if the **timing chain, water pump, and head gaskets** were replaced at service intervals.

2. **Good Power for the Class**

- **283 300 hp (depending on model and year)** is strong for a V6, making it competitive with similar GM and Ford V6 engines.

- **Torque (260 270 lb-ft)** is adequate for towing (up to **3,500 lbs** in some trims) and highway passing.

- **Smooth operation** compared to older Chrysler V6s, thanks to modern fuel injection and balance.

3. **Fuel Efficiency (For a V6)**

- **18 22 MPG highway** is reasonable for a **V6 sedan/SUV**, though not as efficient as a modern turbocharged 4-cylinder.

- Better than the **3.3L/3.8L V6s** it replaced, which often struggled below **15 MPG**.

4. **Available in Multiple Body Styles**

- **Chrysler 300 (2011 2013)** A solid midsize sedan with good handling.

- **Chrysler 200 (2011 2013)** A compact luxury sedan (discontinued after 2013).

- **Chrysler Avenger (2012 2014)** A European-style compact hatchback (similar to the Dodge Dart).

- **Chrysler Durango (2011 2013)** A **3.6L V6 version** exists (though most had the 5.7L Hemi).

- **Jeep Wrangler (2011 2013, 3.6L SRT8 models excluded)** Some **3.6L Wranglers** were available (though rare).

- **Jeep Journey (2011 2013)** A **3.6L V6** was standard in some trims.

- This means you have **more vehicle options** depending on your needs (SUV, sedan, hatchback).

5. **Modern Features for the Time**

- **Uconnect infotainment (2011 2013)** While basic by today s standards, it was **advanced for its time** with Bluetooth, USB, and some navigation options.

- **Stable platform** The **300 and 200** had **good ride quality and handling** compared to older Chrysler models.

- **Available AWD (in some models)** The **Avenger and Journey** offered **AWD**, which is useful for light off-road or snow.

6. **Lower Cost of Ownership (Compared to Hemi or Turbo Engines)**

- **Cheaper to maintain than a 5.7L Hemi or turbocharged engines** (e.g., 2.4L EcoDiesel).

- **No turbocharger issues** (unlike some Ford 3.5L EcoBoost or GM turbo V6s).

- **Timing chain (not belt)** Less prone to catastrophic failure than a timing belt, but still requires **regular inspection**.

7. **Good Resale Value (For a Chrysler of That Era)**

- **Better than most 2011 2013 Chryslers** (which often had **3.3L/3.8L V6 problems**).

- **Still finds buyers** in the used market, especially the **300 and Journey**.

---

### **Cons of the 3.6L LH Pentastar Engine & Related Models**

1. **Timing Chain & Water Pump Issues (If Neglected)**

- **Timing chain stretch** can occur if **not serviced every 60K 90K miles**.

- **Water pump failure** is common (often linked to the timing chain service).

- **Symptoms:** **Misfires, rough idle, coolant leaks, or a "ticking" noise** from the timing cover.

- **Fix:** **Replacing the timing chain, tensioners, guides, and water pump** is **expensive ($1,200 $1,800)** but **critical to prevent engine damage**.

2. **Head Gasket & Cooling System Problems**

- Some **2011 2013 models** had **head gasket leaks**, especially if overheated.

- **Coolant leaks** from the **thermostat housing or radiator** are common.

- **Symptoms:** **Overheating, white smoke from exhaust, sweet smell of coolant, or milky oil**.

- **Fix:** **Head gasket replacement is costly ($1,000 $1,500)** and requires **engine disassembly**.

3. **Transmission Issues (Especially in Early Models)**

- **Slipping gears**

- **Delayed shifts**

- **Transmission fluid leaks**

- **Later models (2012 ) improved**, but **early 2011 examples are riskier**.

- **Symptoms:** **Rough shifting, grinding, or delayed engagement**.

- **Fix:** **Transmission rebuild ($2,000 $3,000)** or **replacement**.

4. **Electrical & Infotainment Glitches**

- **Uconnect system** was **prone to freezing, slow response, and software bugs**.

- **Power window/door lock failures** were common.

- **Battery drain issues** (especially in older models).

- **Fix:** **Software updates (if available) or full electrical system check**.

5. **Interior & Build Quality (For the Price)**

- **Plastic-heavy interiors** (common in Chryslers of that era).

- **Cheap materials** (especially in lower trims).

- **Noisy cabin** (wind, road, and engine noise transfer).

- **Poor sound insulation** compared to competitors (Toyota, Honda, Ford).

6. **Rust (In Some Markets)**

- **Rockers, wheel wells, and undercarriage** can rust in **snowy or salted regions**.

- **Check for rust** before buying, especially in **wheels, subframe, and exhaust**.

7. **Discontinued Models (Limited Parts & Support)**

- **Harder to find parts** (especially for rare components).

- **Dealers may not stock OEM parts**.

- **Aftermarket support is available but not as extensive as Toyota/Honda**.

8. **Fuel Economy Not Great by Modern Standards**

- **18 22 MPG highway** is **decent for a V6 sedan/SUV of that era**, but **modern turbo 4-cylinders do 30 MPG**.

- **Not ideal for high-mileage commuters**.

9. **Some Models Were Underpowered for Their Size**

- **Chrysler 300 (3.6L V6)** was **heavy (4,000 lbs)** and **not as quick as a 5.7L Hemi or turbocharged rivals**.

- **Avenger & Journey** felt **underpowered** compared to competitors like the **Honda CR-V or Toyota RAV4**.

10. **Recalls & Early Model Defects**

- **Airbag issues**

- **Fuel pump failures**

- **Electrical wiring problems**

- **Check for open recalls** before buying (use **NHTSA s VIN lookup**).

---

### **Common Issues by Model**

**Model** **Key Strengths** **Key Weaknesses**

----------- ------------------ -------------------

Details:

Free shipping, if offered, applies only to commercial addresses with proper equipment dock and forklift unload. JEEP WRANGLER 12-13 3.6L, LH. Most items are shipped the same-day as purchase. Warranty period begins the day after delivery.

Transfer cases will not be included with transmissions from 4x4 or All Wheel Drive vehicles. CHRYSLER 300 11-13 3.6L, LH. Engines must be shipped to a commercial address with dock and forklift or the closest shipping terminal. Buyer will need to replace the transmission oil filter, put a new pan gasket on, flush and add manufacturer specific fluids.

DODGE DURANGO 11-13 3.6L, LH. Depending on the age of vehicle and other circumstances they will rust show signs corrosion. Buyer pays return shipping if wrong color ordered. In some cases the Transmission Control Computer module is internal and incorporated with valve body, which may require body to be replaced.

Transmission lines will need flushed, along with the transmission oil cooler needs replaced if equipped, this to be done so contaminants from bad not ruin your replacement. Cylinder Head. Quick shipping. Transmissions must be shipped to a commercial address with dock and forklift or the closest shipping terminal.

Axle seals, front and drive shaft seals will also need to be replaced. Some external sensors or solenoids may need to be replaced. Picture in the listing may not be of actual item sold; it a stock picture only.

specifications cylinderheapar:

• for models: 200, 300, Avenger, Durango, Wrangler, Journey
• for makes: Chrysler
• for years: 2011-2013
• material: Aluminum
• vintage part: No
• interchange: 306-251
• type: Cylinder Head
• manufacturer warranty: 1 Month
• id: 284b635a-9bb7-4035-905f-f87351f42336
• country of origin: United States

shipping cylinderheapar:

• class: Standard
• type: Fixed
• cost: $0.00
• transit: 3-6 Days
• service: Standard

offer cylinderheapar:

• started: March 27, 2026
• options: Ship-to-home
• quantity: 1
• best offers: True
• sold: 0
• availability: In Stock

seller cylinderheapar:

• rating: 99.6%
• # reviews: 24568
• city: Erie, Pennsylvania

payments cylinderheapar:

• wallet: Google-pay
• other
• credit card: Visa

general cylinderheapar:

• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

returns cylinderheapar:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

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